Thermal Hydraulic Analysis of PCSG Based on Boiling Heat Transfer Model of Rectangular Small-Scale Flow Channel
A rectangular small-scale flow channel boiling heat transfer model based on flow patterns was formed by combining the transition criteria for flow patterns in rectangular small-scale flow channels,boiling heat transfer models in bubbly flow regions,restricted bubble flow,and boiling heat transfer models in annular flow regions.On this basis,a one-dimensional thermal hydraulic calculation program PCTH for PCSG was developed,and thermal hydraulic analysis of PCSG was carried out.The results indicate that the program's calculated results are in good agreement with the experimental results,and can effectively predict the thermal and hydraulic characteristics of rectangular small-scale flow channels in PCSG within the range of experimental data.
printed circuit board steam generatorPCSGsmall-scale flow channelboiling heat transfer